Mack when the Controller Area Network (CAN) communications are interrupted, the throttle signal from the electro mobility control unit may retain the last known throttle setting, and the engine will not return to idle as intended.
The short version
Mack Trucks, Inc. reported a problem with the throttle throttle position sensor (tps). Here is what owners need to know.
When the Controller Area Network (CAN) communications are interrupted, the throttle signal from the electro mobility control unit may retain the last known throttle setting, and the engine will not return to idle as intended. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 124, "Accelerator Control Systems."
An engine that does not return to idle quickly enough can cause a loss of vehicle control, increasing the risk of a crash.
Take it to a dealer — they will update the control unit software, free of charge.
Affected vehicles
These model years are included in NHTSA campaign 25V-427.
| YEAR RANGE | MODEL |
|---|---|
| 2024–2026 | Mack MD |
What changed
Newest first. The record shows both when the recall began and what has changed since.
- Recall reported to NHTSA. LATEST
Drive one of these? Check your VIN to see if your specific vehicle is affected.
Check your VINWhat this record means
Data from the NHTSA recall database. A clean VIN check means no open federal recalls for that vehicle — not that it never had one.
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MyAutoRecalls is not affiliated with Mack Trucks, Inc. or the National Highway Traffic Safety Administration.